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ASM1233M-3F Datasheet(PDF) 1 Page - Alliance Semiconductor Corporation |
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ASM1233M-3F Datasheet(HTML) 1 Page - Alliance Semiconductor Corporation |
1 / 11 page ASM1233D-L/D/M Alliance Semiconductor 2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com Notice: The information in this document is subject to change without notice rev 1.3 Low Power, 5V/3.3V, µP Reset, Active LOW, Open-Drain Output March 2005 General Description The ASM1233D-L/1233D/1233M are voltage supervisors with low-power, 5/3.3V µP Reset, with an active LOW, open-drain output. Maximum supply current over temperature is 15µA for 3.3V devices and 20µA for 5V devices. The ASM1233D-L/1233D/1233M generates an active LOW reset signal whenever the monitored supply is out of tolerance. A precision reference and comparator circuit monitors power supply (VCC) level. The tolerance are 5%,10% and 15%. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 350ms to allow the power supply and system microprocessor to stabilize. The ASM1233D-L/1233D/1233M is designed with an open- drain output stage and operates over the extended industrial temperature range. These devices are available in compact SOT-223, SO-8 and TO-92 packages. Other low power products in this family include ASM1810/11/ 12/15/16/17. Key Features • Low Supply Current • 15µA maximum (<=3.6V), 20µA maximum (5.5V) • Automatically restarts a microprocessor after power failure • 350ms reset delay after VCC returns to an in-tolerance con- dition • Active LOW power-up reset, 5k Ω internal pull-up • Precision temperature-compensated voltage reference and comparator • Eliminates external components • Low-cost SOT-223/SO-8/TO-92 packages • Operating temperature: -40°C to +85°C Applications • Set-top boxes • Cellular phones •PDAs • Energy management systems • Embedded control systems • Printers • Single board computers Typical Operating Circuit Block Diagram Microprocessor VCC RESET RESET GND GND Supply Reference Delay 350ms Typical Tolerance Bias + - ASM1233D-L,ASM1233D,ASM1233M VCC RESET Delay Typical + - 5.0kΩ |
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